On a rainy April night, a serious accident occurs in Hamburg at Ring 3. A van crashes at high speed into a tree. However, the fatally injured driver is not the only victim at the scene. In the cargo area of the vehicle lie five corpses—one of them with a gunshot wound. What does this gruesome discovery mean? Who are the dead? Peer Nielsen from the homicide squad embarks on a search for clues with his team and uncovers an unimaginable reality in the medical everyday life.